I've never experienced a 'hangover' as such, if hangover includes a bad head / headache.
I've only ever had 2 or 3 headaches in my life at all and non were drink related.
I do tend to be physically ill, get super sleepy, have stomach cramps and generally feel dog rough if I've really really gone binge tastic. But no, never a headache.
Which incidentally, leads me to remember that as a kid, we used to have paracetemol parties. Spectacularly stupid, I'd freak if I thought my kids did that. Couple of paracetemol and then a few cans of strong.